2. Pipes Using Flexible Elastomeric Seals
F 412 Terminology Relating to Plastic Piping Systems
F 441 Speciļ¬cation for Chlorinated Poly(Vinyl Chloride)
(CPVC) Plastic Pipe, Schedules 40 and 80
2.2 Federal Standard:
Fed. Std. No. 123 Marking for Shipment (Civil Agencies)3
2.3 Military Standard:
MIL-STD-129 Marking for Shipment and Storage3
2.4 NSF Standards:
Standard No. 14 for Plastic Piping Components and Related
Materials4
Standard No. 61 for Drinking Water System Componentsā
Health Effects4
3. Terminology
3.1 Deļ¬nitions: āDeļ¬nitions are in accordance with Ter-
minology F 412 and abbreviations are in accordance with
Terminology D 1600, unless otherwise speciļ¬ed. The abbre-
viation for poly(vinyl chloride) plastic is PVC.
3.2 Deļ¬nitions of Terms Speciļ¬c to This Standard:
3.2.1 hydrostatic design stressāthe estimated maximum
tensile stress the material is capable of withstanding continu-
ously with a high degree of certainty that failure of the pipe
will not occur. This stress is circumferential when internal
hydrostatic water pressure is applied.
3.2.2 pressure rating (PR)āthe estimated maximum water
pressure the pipe is capable of withstanding continuously with
a high degree of certainty that failure of the pipe will not occur.
3.2.3 relation between dimensions, design stress, and pres-
sure ratingāthe following expression, commonly known as
the ISO equation,5
is used in this speciļ¬cation to relate
dimensions, hydrostatic design stress, and pressure rating:
2S/P 5 ~D0/t! ā 1
where:
S = hydrostatic design stress, psi (or MPa),
P = pressure rating, psi (or MPa),
D0 = average outside diameter, in. (or mm), and
t = minimum wall thickness, in. (or mm).
3.2.4 standard thermoplastic pipe materials designation
codeāthe pipe materials designation code shall consist of the
abbreviation PVC for the type of plastic, followed by the
ASTM type and grade in Arabic numerals and the design stress
in units of 100 psi (0.7 MPa) with any decimal ļ¬gures dropped.
When the design stress code contains less than two ļ¬gures, a
cipher shall be used before the number. Thus a complete
material code shall consist of three letters and four ļ¬gures for
PVC plastic pipe materials (see Section 5).
4. Classiļ¬cation
4.1 GeneralāThis speciļ¬cation covers PVC pipe made to
and marked with one of six type/grade/design stress designa-
tions (see X1.2) in Schedule 40, 80, and 120 wall sizes.
4.2 Hydrostatic Design StressesāāThis speciļ¬cation cov-
ers pipe made from PVC plastics as deļ¬ned by four hydrostatic
design stresses which have been developed on the basis of
long-term tests (Appendix X1).
5. Materials and Manufacture
5.1 GeneralāPoly(vinyl chloride) plastics used to make
pipe meeting the requirements of this speciļ¬cation are catego-
rized by means of two criteria, namely, (1) short-term strength
tests and (2) long-term strength tests.
NOTE 5āThe PVC pipe intended for use in the transport of potable
water should be evaluated and certiļ¬ed as safe for this purpose by a testing
agency acceptable to the local health authority. The evaluation should be
in accordance with requirements for chemical extraction, taste, and odors
that are no less restrictive than those included in NSF Standard No. 14.
The seal or mark of the laboratory making the evaluation should be
included on the pipe. See pipe marking requirement for reclaimed water
systems.
5.2 Basic MaterialsāThis speciļ¬cation covers pipe made
from PVC plastics having certain physical and chemical
properties as described in Speciļ¬cation D 1784.
5.3 CompoundāThe PVC compounds used for this pipe
shall equal or exceed the following classes described in
Speciļ¬cation D 1784; PVC 12454-B, 12454-C, or 14333-D.
5.4 Rework MaterialāThe manufacturer shall use only his
own clean rework pipe material and the pipe produced shall
meet all the requirements of this speciļ¬cation.
6. Requirements
6.1 Dimensions and Tolerances:
6.1.1 Dimensions and tolerances shall be as shown in Table
1 and Table 2 when measured in accordance with Test Method
D 2122. The tolerances for out-of-roundness shall apply only
to pipe prior to shipment.
6.2 Sustained PressureāThe pipe shall not fail, balloon,
burst, or weep as deļ¬ned in Test Method D 1598, at the test
pressures given in Tables 3-5 when tested in accordance with
8.4.
6.2.1 Accelerated Regression TestāThe accelerated regres-
sion test shall be used in place of both the sustained and burst
pressure tests, at the option of the manufacturer. The test shall
be conducted in accordance with 8.4.1. The pipe shall demon-
strate a hydrostatic design basis projection at the 100 000-h
intercept that meets the hydrostatic design basis category
requirement (see Table 1 and Test Method D 2837) for the PVC
material used in its manufacture. (Example: PVC 1120 pipe
must have a minimum 100 000-h projection of 3830 psi (26.40
MPa) and 85 % lower conļ¬dence limit (LCL).
6.3 Burst PressureāThe minimum burst pressures for PVC
plastic pipe shall be as given in Table 6, when determined in
accordance with Test Method D 1599.
NOTE 6āTimes greater than 60 s may be needed to bring large size
specimens to burst pressure. The test is more difficult to pass using greater
pressurizing times.
6.4 FlatteningāThere shall be no evidence of splitting,
cracking, or breaking when the pipe is tested in accordance
with 8.6.
6.5 Extrusion QualityāThe pipe shall not ļ¬ake or disinte-
grate when tested in accordance with Test Method D 2152.
3
Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700
Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.
4
Available from NSF International, P.O. Box 130140, 789 N. Dixboro Rd., Ann
Arbor, MI 48113-0140.
5
ISO R161-1960, Pipes of Plastics Materials for the Transport of Fluids (Outside
Diameters and Nominal Pressures) Part 1, Metric Series.
D 1785 ā 04
2
4. NOTE 7āColor and transparency or opacity should be speciļ¬ed in the
contract or purchase order.
8. Test Methods
8.1 ConditioningāCondition the test specimens at 73.4 6
3.6Ā°F (23 6 2Ā°C) and 50 6 5 % relative humidity for not less
than 40 h prior to test in accordance with Procedure A of
Practice D 618, for those tests where conditioning is required.
8.2 Test ConditionsāConduct tests in the standard labora-
tory atmosphere of 73.4 6 3.6Ā°F (23 6 2Ā°C) and 50 6 5 %
relative humidity, unless otherwise speciļ¬ed in the test meth-
ods or in this speciļ¬cation.
TABLE 3 Sustained Pressure Test Conditions for Water at 73Ā°F
(23Ā°C) for PVC Plastic Pipe, Schedule 40
Nominal
Pipe
Size
Pressure Required for TestA
PVC1120
PVC1220
PVC2120
PVC2116 PVC2112 PVC2110
in. psi
1ā8 1690 1360 1130 930
1ā4 1640 1310 1090 900
3ā8 1310 1050 870 720
1ā2 1250 1000 840 690
3ā4 1010 810 680 550
1 950 760 630 520
11ā4 770 620 520 420
11ā2 690 560 460 380
2 580 470 390 320
21ā2 640 510 430 350
3 590 440 370 300
31ā2 500 400 340 280
4 470 370 310 260
5 410 330 270 220
6 370 300 250 200
8 330 260 220 180
10 300 240 200 160
12 280 220 180 150
14 270 220 180 150
16 270 220 180 150
18 270 220 180 150
20 260 210 170 140
24 250 200 170 140
in. MPa
1ā8 11.65 9.38 7.79 6.41
1ā4 11.31 9.03 7.52 6.21
3ā8 9.03 7.24 6.00 4.96
1ā2 8.62 6.89 5.79 4.76
3ā4 6.96 5.58 4.69 3.79
1 6.55 5.24 4.34 3.59
11ā4 5.31 4.27 3.59 2.90
11ā2 4.76 3.86 3.17 2.62
2 4.00 3.24 2.69 2.21
21ā2 4.41 3.52 2.96 2.41
3 4.07 3.03 2.55 2.07
31ā2 3.45 2.76 2.34 1.93
4 3.24 2.55 2.14 1.79
5 2.83 2.28 1.86 1.52
6 2.55 2.07 1.72 1.38
8 2.28 1.79 1.52 1.24
10 2.07 1.65 1.38 1.10
12 1.93 1.52 1.24 1.03
14 1.89 1.54 1.26 1.05
16 1.89 1.54 1.26 1.05
18 1.89 1.54 1.26 1.05
20 1.82 1.47 1.19 0.98
24 1.75 1.40 1.19 0.98
A
The ļ¬ber stresses used to derive these test pressures are as follows:
psi MPa
PVC1120 4200 29.0
PVC1220 4200 29.0
PVC2120 4200 29.0
PVC2116 3360 23.2
PVC2112 2800 19.3
PVC2110 2300 15.9
TABLE 4 Sustained Pressure Test Conditions for Water at 73Ā°F
(23Ā°C) for PVC Plastic Pipe, Schedule 80
Nominal
Pipe
Size
Pressure Required for TestA
PVC1120
PVC1220
PVC2120
PVC2116 PVC2112 PVC2110
in. psi
1ā8 2570 2060 1720 1410
1ā4 2370 1900 1580 1300
3ā8 1930 1540 1290 1060
1ā2 1780 1430 1190 980
3ā4 1440 1160 960 790
1 1320 1060 880 720
11ā4 1090 870 730 600
11ā2 990 790 660 540
2 850 680 570 460
21ā2 890 710 590 490
3 790 630 520 430
31ā2 730 580 480 400
4 680 540 450 370
5 610 490 400 330
6 590 470 390 320
8 520 410 340 280
10 490 390 330 270
12 480 380 320 260
14 470 380 320 260
16 470 370 310 260
18 460 370 310 250
20 460 370 300 250
24 450 360 300 250
in. MPa
1ā8 17.72 14.21 11.86 9.72
1ā4 16.34 13.10 10.90 8.96
3ā8 13.31 10.62 8.89 7.31
1ā2 12.27 9.86 8.20 6.76
3ā4 9.93 8.00 6.62 5.45
1 9.10 7.31 6.07 4.96
11ā4 7.52 6.00 5.03 4.14
11ā2 6.83 4.96 4.55 3.72
2 5.86 4.69 3.93 3.17
21ā2 6.14 4.90 4.07 3.38
3 5.45 4.34 3.59 2.96
31ā2 5.03 4.00 3.31 2.76
4 4.69 3.72 3.10 2.55
5 4.21 3.38 2.76 2.28
6 4.07 3.24 2.69 2.21
8 3.59 2.83 2.34 1.93
10 3.38 2.69 2.28 1.86
12 3.31 2.62 2.21 1.79
14 3.29 2.66 2.24 1.82
16 3.29 2.59 2.17 1.82
18 3.22 2.59 2.17 1.75
20 3.22 2.59 2.10 1.75
24 3.15 2.52 2.10 1.75
A
The ļ¬ber stresses used to derive these test pressures are as follows:
psi MPa
PVC1120 4200 29.0
PVC1220 4200 29.0
PVC2120 4200 29.0
PVC2116 3360 23.2
PVC2112 2800 19.3
PVC2110 2300 15.9
D 1785 ā 04
4
5. 8.3 SamplingāThe selection of the sample or samples of
pipe shall be as agreed upon by the purchaser and seller. In case
of no prior agreement, any sample selected by the testing
laboratory shall be deemed adequate.
8.3.1 Test SpecimensāNot less than 50 % of the test speci-
mens required for any pressure test shall have at least a part of
the marking in their central sections. The central section is that
portion of pipe which is at least one pipe diameter away from
an end closure.
8.4 Sustained Pressure TestāSelect the test specimens at
random. Test individually with water at the internal pressures
given in Tables 3-5, six specimens of pipe, each specimen at
least ten times the nominal diameter in length, but not less than
10 in. (250 mm) or more than 3 ft (1 m) between end closures
and bearing the permanent marking on the pipe. Maintain the
specimens at the pressure indicated for a period of 1000 h.
Hold the pressure as closely as possible, but within 610 psi
(670 kPa). Condition the specimens at the test temperature of
73.4Ā°F (23Ā°C) to within 3.6Ā°F (62Ā°C). Test in accordance with
Test Method D 1598, except maintain the pressure at the values
given in Tables 3-5 for 1000 h. Failure of two of the six
specimens tested shall constitute failure in the test. Failure of
one of the six specimens tested in retest shall constitute failure
in the test. Evidence of failure of the pipe shall be as deļ¬ned in
Test Method D 1598.
8.4.1 Accelerated Regression TestāTest in accordance with
procedures in Test Method D 1598, using either free end or
restrained end ļ¬ttings. A minimum of six samples shall be
tested. Test three specimens at a single pressure that will result
in failures at or below 0.10 h. Test an additional three
specimens at a single pressure that will result in failures at
about 200 h. Generating additional data points to improve the
LTHS or LCL, or both, is acceptable. No points shall be
excluded unless an obvious defect is detected in the failure area
of the test sample, or there was a malfunction of the equipment.
TABLE 5 Sustained Pressure Test Conditions for Water at 73Ā°F (23Ā°C) for PVC Plastic Pipe, Schedule 120
Nominal Pipe
Size
Pressure Required for TestA
PVC1120
PVC1220
PVC2120
PVC2116 PVC2112 PVC2110
in. psi
1ā2 2130 1710 1420 1170
3ā4 1620 1300 1080 890
1 1510 1200 1000 830
11ā4 1250 1000 830 680
11ā2 1130 900 750 620
2 990 790 660 540
21ā2 980 780 650 540
3 930 750 620 510
31ā2 810 640 540 440
4 900 720 600 490
5 830 660 550 450
6 780 620 520 430
8 760 610 510 420
10 770 620 510 420
12 710 570 480 390
in. MPa
1ā2 14.69 11.79 9.79 8.07
3ā4 11.17 8.96 7.45 6.14
1 10.41 8.27 6.89 5.72
11ā4 8.62 6.89 5.72 4.69
11ā2 7.79 6.21 5.17 4.27
2 6.83 5.45 4.55 3.72
21ā2 6.76 5.38 4.48 3.72
3 6.41 5.17 4.27 3.52
31ā2 5.58 4.41 3.72 3.03
4 6.21 4.96 4.14 3.38
5 5.72 4.55 3.79 3.10
6 5.38 4.27 3.59 2.96
8 5.24 4.21 3.52 2.90
10 5.31 4.27 3.52 2.90
12 4.90 3.93 3.31 2.69
A
The ļ¬ber stresses used to derive these test pressures are as follows:
psi MPa
PVC1120 4200 29.0
PVC1220 4200 29.0
PVC2120 4200 29.0
PVC2116 3360 23.2
PVC2112 2800 19.3
PVC2110 2300 15.9
D 1785 ā 04
5
6. Characterize the data using the least squares regression de-
scribed in Test Method D 2837.
8.5 Burst PressureāDetermine the minimum burst pressure
with at least ļ¬ve specimens in accordance with Test Method
D 1599. The time of testing of each specimen shall be between
60 and 70 s.
8.6 FlatteningāFlatten three specimens of the pipe, 2 in.
(50 mm) long, between parallel plates in a suitable press until
the distance between the plates is 40 % of the outside diameter
of the pipe or the walls of the pipe touch, whichever occurs
ļ¬rst. The rate of loading shall be uniform and such that the
TABLE 6 Burst Pressure Requirements for Water at 73Ā°F (23Ā°C) for PVC Plastic Pipe, Schedules 40, 80, and 120
Nominal Pipe Size
Min Burst PressuresA
Schedule 40 Schedule 80 Schedule 120
PVC1120
PVC1220
PVC2120
PVC2112
PVC2116
PVC2110
PVC1120
PVC1220
PVC2120
PVC2112
PVC2116
PVC2110
PVC1120
PVC1220
PVC2120
PVC2112
PVC2116
PVC2110
in. psi
1ā8 2580 2020 3920 3060 . . . . . .
1ā4 2490 1950 3620 2830 . . . . . .
3ā8 1990 1560 2940 2300 . . . . . .
1ā2 1910 1490 2720 2120 3250 2540
3ā4 1540 1210 2200 1720 2470 1930
1 1440 1130 2020 1580 2300 1790
11ā4 1180 920 1660 1300 1900 1490
11ā2 1060 830 1510 1180 1720 1340
2 890 690 1290 1010 1510 1180
21ā2 970 760 1360 1060 1490 1170
3 840 660 1200 940 1420 1110
31ā2 770 600 1110 860 1230 960
4 710 560 1040 810 1380 1080
5 620 390 930 720 1260 990
6 560 440 890 700 1190 930
8 500 390 790 620 1160 910
10 450 350 750 580 1170 920
12 420 330 730 570 1090 850
14 410 320 720 570 . . . . . .
16 410 320 710 560 . . . . . .
18 410 320 700 550 . . . . . .
20 390 310 700 540 . . . . . .
24 380 300 680 530 . . . . . .
in. MPa
1ā8 17.79 13.93 27.03 21.10 . . . . . .
1ā4 17.17 13.45 24.96 19.52 . . . . . .
3ā8 13.72 10.76 20.27 15.86 . . . . . .
1ā2 13.17 10.27 18.76 14.62 22.41 17.52
3ā4 10.62 8.34 15.17 11.86 17.03 13.31
1 9.93 7.79 13.93 10.89 15.86 12.34
11ā4 8.14 6.34 11.45 8.96 13.10 10.27
11ā2 7.31 5.72 10.41 8.14 11.86 9.24
2 6.14 4.76 8.89 6.96 10.41 8.14
21ā2 6.69 5.24 9.38 7.31 10.27 8.07
3 5.79 4.55 8.27 6.48 9.79 7.65
31ā2 5.31 4.14 7.65 5.93 8.48 6.62
4 4.90 3.86 7.17 5.58 9.51 7.45
5 4.27 2.69 6.41 4.96 8.69 6.83
6 3.86 3.03 6.14 4.83 8.20 6.41
8 3.45 2.69 5.45 4.27 8.00 6.27
10 3.10 2.41 5.17 4.00 8.07 6.34
12 2.90 2.28 5.03 3.93 7.52 5.86
14 2.87 2.24 5.04 3.99 . . . . . .
16 2.87 2.24 4.97 3.92 . . . . . .
18 2.87 2.24 4.90 3.85 . . . . . .
20 2.73 2.17 4.90 3.78 . . . . . .
24 2.66 2.10 4.76 3.71 . . . . . .
A
The ļ¬ber stresses used to derive these test pressures are as follows:
psi MPa
PVC1120 6400 44.1
PVC1220 6400 44.1
PVC2120 6400 44.1
PVC2116 5000 34.5
PVC2112 5000 34.5
PVC2110 5000 34.5
D 1785 ā 04
6
7. compression is completed within 2 to 5 min. On removal of the
load examine the specimens for evidence of splitting, cracking,
or breaking.
9. Retest and Rejection
9.1 If the results of any test(s) do not meet the requirements
of this speciļ¬cation, the test(s) shall be conducted again only
by agreement between the purchaser and seller. Under such
agreement, minimum requirements shall not be lowered,
changed, or modiļ¬ed, nor shall speciļ¬cation limits be changed.
If upon retest, failure occurs, the quantity of product repre-
sented by the test(s) does not meet the requirements of this
speciļ¬cation.
10. Product Marking
10.1 Quality of MarkingāThe marking shall be applied to
the pipe in such a manner that it remains legible (easily read)
after installation and inspection.
10.2 Content of Marking:
10.2.1 Marking on the pipe shall include the following,
spaced at intervals of not more than 5 ft (1.5 m):
10.2.1.1 Nominal pipe size (for example, 2 in. (50 mm)),
10.2.1.2 Type of plastic pipe material in accordance with the
designation code prescribed in 3.2.4, for example, PVC1120,
10.2.1.3 Schedule (40, 80, or 120, whichever is applicable)
and the pressure rating in pounds per square inch (megapas-
cals) for water at 73Ā°F (23Ā°C) shown as the number followed
by psi (for example, 200 psi (1.4 MPa)). When the indicated
pressure rating is lower than that calculated in accordance with
3.2.3 (see Appendix X1), this shall be indicated by placing a
star after the pressure rating,
10.2.1.4 ASTM designation D 1785, with which the pipe
complies,
10.2.1.5 Manufacturerās name (or trademark) and code (see
Note 4), and
10.2.1.6 Pipe intended for the transport of potable water
shall also include the seal or mark of the laboratory making the
evaluation for this purpose, spaced at intervals speciļ¬ed by the
laboratory.
NOTE 8āManufacturers using the seal or mark of a laboratory must
obtain prior authorization from the laboratory concerned.
NOTE 9āIt is common practice to dual mark Schedule 40 piping for
potable water and DWV usage in which compliance with each applicable
standard is met.
11. Quality Assurance
11.1 When the product is marked with this designation,
D 1785, the manufacturer affirms that the product was manu-
factured, inspected, sampled, and tested in accordance with this
speciļ¬cation and has been found to meet the requirements of
this speciļ¬cation.
12. Keywords
12.1 pressure pipe; PVC pipe; Schedule 40 pipe; Schedule
80 pipe; Schedule 120 pipe
SUPPLEMENTARY REQUIREMENTS
This requirement applies whenever a regulatory authority or user calls for product to be used to
convey or to be in contact with potable water.
S1. Potable Water RequirementāProducts intended for
contact with potable water shall be evaluated, tested, and
certiļ¬ed for conformance with ANSI/NSF Standard No. 61 or
the health effects portion of NSF Standard No. 14 by an
acceptable certifying organization when required by the regu-
latory authority having jurisdiction.
This requirement applies only to pipe to be used in systems that have not established other provisions for identiļ¬cation.
S2.Pipe Marking Requirement for Reclaimed Water
SystemsāColor identiļ¬cation of pipe shall be by (1) use of
purple (violet) PVC material or (2) by use of continuous purple
stripes printed lengthwise on opposite sides of the pipe. The
pipe shall be marked RECLAIMED WATER at intervals of 5
ft. or less.
D 1785 ā 04
7
8. GOVERNMENT/MILITARY PROCUREMENT
These requirements apply only to federal/military procurement, not domestic sales or transfers.
S1. Pipe for Reclaimed-Water SystemāPipe used in these
systems shall be purple (violet) in color and it shall be marked
Reclaimed Water.
S2. Responsibility for InspectionāUnless otherwise speci-
ļ¬ed in the contract or purchase order, the producer is respon-
sible for the performance of all inspection and test require-
ments speciļ¬ed herein. The producer may use his own or any
other suitable facilities for the performance of the inspection
and test requirements speciļ¬ed herein, unless the purchaser
disapproves. The purchaser shall have the right to perform any
of the inspections and tests set forth in this speciļ¬cation where
such inspections are deemed necessary to ensure that material
conforms to prescribed requirements.
NOTE S2.1āIn U.S. Federal contracts, the contractor is responsible for
inspection.
S3. Packaging and Marking for U.S. Government Procure-
ment:
S3.1 PackagingāUnless otherwise speciļ¬ed in the con-
tract, the materials shall be packaged in accordance with the
supplierās standard practice in a manner ensuring arrival at
destination in satisfactory condition and which will be accept-
able to the carrier at lowest rates. Containers and packing shall
comply with Uniform Freight Classiļ¬cation rules or National
Motor Freight Classiļ¬cation rules.
S3.2 MarkingāMarking for shipment shall be in accor-
dance with Fed. Std. No. 123 for civil agencies and MIL-STD-
129 for military agencies.
NOTE S3.1āThe inclusion of U.S. Government procurement require-
ments should not be construed as an indication that the U.S. Government
uses or endorses the products described in this speciļ¬cation.
APPENDIX
(Nonmandatory Information)
X1. SOURCE OF HYDROSTATIC DESIGN STRESSES
X1.1 The hydrostatic design stresses recommended by the
Plastics Pipe Institute are used to pressure rate PVC plastic
pipe. These hydrostatic design stresses are 2000 psi (14 MPa),
1600 psi (11 MPa), 1250 psi (9 MPa), and 1000 psi (7 MPa) for
water at 73Ā°F (23Ā°C). These hydrostatic design stresses apply
only to pipe meeting all the requirements of this speciļ¬cation.
X1.2 Six PVC pipe materials are included based on the
requirements of Speciļ¬cation D 1784 and the PPI-
recommended hydrostatic design stresses as follows:
X1.2.1 Type I, Grade 1 (12454-B), with a hydrostatic design
stress of 2000 psi (14 MPa), designated as PVC1120.
X1.2.2 Type I, Grade 2 (12454-C), with a hydrostatic design
stress of 2000 psi (14 MPa), designated as PVC1220.
X1.2.3 Type II, Grade 1 (14333-D), with a hydrostatic
design stress of 2000 psi (14 MPa), designated as PVC2120.
X1.2.4 Type II, Grade 1 (14333-D), with a hydrostatic
design stress of 1600 psi (11.2 MPa), designated as PVC2116.
X1.2.5 Type II, Grade 1 (14333-D), with a hydrostatic
design stress of 1250 psi (8.7 MPa), designated as PVC2112.
X1.2.6 Type II, Grade 1 (14333-D), with a hydrostatic
design stress of 1000 psi (7.0 MPa), designated as PVC2110.
X1.3 The standard method for obtaining hydrostatic basis
for thermoplastic pipe materials is Test Method D 2837.
Additional information regarding the test method and other
criteria used in developing these hydrostatic design stresses
may be obtained from the Plastics Pipe Institute, a division of
The Society of the Plastics Industry, 355 Lexington Ave., New
York, NY 10017. These hydrostatic design stresses may not be
suitable for materials that show a wide departure from a
straight-line plot of log stress versus log time to failure. All the
data available to date on PVC pipe materials made in the
United States exhibit a straight-line plot under these plotting
conditions.
X1.4 The pipe is rated for use with water at 73Ā°F (23Ā°C) at
the maximum internal pressures shown in Tables X1.1-X1.3.
Lower pressure ratings than those calculated in accordance
with 3.2.3 may be recommended, at the option of the pipe
manufacturer, in which case the SDR shall be included in the
marking. Experience of the industry indicates that PVC plastic
pipe meeting the requirements of this speciļ¬cation gives
satisfactory service under normal conditions for a long period
at these pressure ratings. The sustained pressure requirements
are related to these ratings through the slopes of the strength-
time plots of these materials in pipe form.
X1.5 The hydrostatic design stresses recommended by the
Plastics Pipe Institute are based on tests made on pipe ranging
in size from 1ā2 to 21ā2 in. (12.5 to 63.5 mm).
D 1785 ā 04
8
11. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned
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TABLE X1.3 Water Pressure Ratings at 73Ā°F (23Ā°C) for Schedule 120 PVC Plastic Pipe
Nominal
Pipe
Size,
in.
psi
PVC1120, PVC1220,
PVC2120
PVC2116 PVC2112 PVC2110
Unthreaded Threaded Unthreaded Threaded Unthreaded Threaded Unthreaded Threaded
1ā2 1010 510 810 410 630 320 510 250
3ā4 770 390 620 310 480 240 390 190
1 720 360 570 290 450 220 360 180
11ā4 600 300 480 240 370 190 300 150
11ā2 540 270 430 210 340 170 270 130
2 470 240 380 190 290 150 240 120
21ā2 470 230 370 190 290 150 230 120
3 440 220 360 180 280 140 220 110
31ā2 380 190 310 150 240 120 190 100
4 430 220 340 170 270 130 220 110
5 400 200 320 160 250 120 200 100
6 370 190 300 150 230 120 190 90
8 380 180 290 140 230 110 180 90
10 370 180 290 140 230 110 180 90
12 340 170 270 140 210 110 170 80
MPa
1ā2 6.96 3.52 5.58 2.83 4.34 2.21 3.52 1.72
3ā4 5.31 2.69 4.27 2.14 3.31 1.65 2.69 1.31
1 4.96 2.48 3.93 2.00 3.10 1.52 2.48 1.24
11ā4 4.14 2.07 3.31 1.65 2.55 1.31 2.07 1.03
11ā2 3.72 1.86 2.96 1.45 2.34 1.17 1.86 0.90
2 3.24 1.65 2.62 1.31 2.00 1.03 1.65 0.83
21ā2 3.24 1.59 2.55 1.31 2.00 1.03 1.59 0.83
3 3.03 1.52 2.48 1.24 1.93 0.97 1.52 0.76
31ā2 2.62 1.31 2.14 1.03 1.65 0.83 1.31 0.69
4 2.96 1.52 2.34 1.17 1.86 0.90 1.52 0.76
5 2.76 1.38 2.21 1.10 1.72 0.83 1.38 0.69
6 2.55 1.31 2.07 1.03 1.59 0.83 1.31 0.62
8 2.62 1.24 2.00 0.97 1.59 0.76 1.24 0.62
10 2.55 1.24 2.00 0.97 1.59 0.76 1.24 0.62
12 2.34 1.17 1.86 0.97 1.45 0.76 1.17 0.55
D 1785 ā 04
11
